Convert DRM_[DEBUG,ERROR,INFO] macros to c99 __VA_ARGS__.
Convert DRM_[DEBUG,ERROR,INFO] macros to c99 __VA_ARGS__.

Approved by:	kib

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase